气候变化领域集成服务门户(CCPortal): All ceramic cathode composite design and manufacturing towards low interfacial resistance for garnet-based solid-state lithium batteries

CCPortal

DOI	10.1039/d0ee02062a
	All ceramic cathode composite design and manufacturing towards low interfacial resistance for garnet-based solid-state lithium batteries
	Kim K.J.; Rupp J.L.M.
发表日期	2020
ISSN	17545692
起始页码	4930
结束页码	4945
卷号	13 期号:12
英文摘要	The critical factors that determine the performance and lifetime of solid-state batteries (SSBs) are driven by the electrode-electrolyte interfaces. The main challenge in fabricating all-oxide cathode composites for garnet-based SSBs has been lowering the thermal processing window in which both good contact and low interfacial resistance can be achieved. Here, we report an alternative ceramic processing strategy that enables the fabrication of all-oxide composite cathodes at an unusually low processing temperature without the use of extra sintering additives or a fluid electrolyte (polymer-gel or liquid electrolyte). We present specific examples of the most common LiFePO4 and LiCoO2 cathodes with a Li-garnet (Li7La3Zr2O12, LLZO) solid-electrolyte. We demonstrate an infiltration step to directly synthesize the LiCoO2 cathode from metal salts in a porous LLZO scaffold, resulting in the formation of a composite cathode such as LiCoO2-LLZO on top of a dense LLZO solid electrolyte at a low processing temperature of 700 °C. A promising discharge capacity of 118 mA h g-1 (3-4.05 V) with a low interfacial resistance of 62 Ohm cm2 is realized for LiCoO2 with a lithium anode, whereas critical phase instabilities for LiFePO4 are uncovered. Our findings encourage a move away from synthesis techniques that employ particle mixing and sintering to fabricate composites. We provide a blueprint for circumventing adverse interphase reactions according to chemistry and ceramic thermal processing budgets in the preparation of these ceramic interfaces as well as for increasing the number of reaction sites for high-performing composite cathodes for Li-garnet SSBs. In addition, the ceramic methods presented are scalable and mass manufacturable for the large-scale production of such composite cathodes for future industry. This journal is © The Royal Society of Chemistry.
英文关键词	Additives; Budget control; Cathodes; Ceramics industry; Garnets; Interface states; Iron compounds; Lanthanum compounds; Lithium compounds; Lithium-ion batteries; Processing; Scaffolds; Sintering; Solid electrolytes; Solid state devices; Solid-State Batteries; Temperature; Zirconium compounds; Discharge capacities; Electrode-electrolyte interfaces; Interfacial resistances; Large scale productions; Low processing temperature; Sintering additives; Solid-state lithium batteries; Synthesis techniques; Phosphorus compounds; ceramics; composite; design method; electrode; equipment; garnet; lithium; manufacturing
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189437
作者单位	Electrochemical Materials Laboratory, Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Electrochemical Materials Laboratory, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Kim K.J.,Rupp J.L.M.. All ceramic cathode composite design and manufacturing towards low interfacial resistance for garnet-based solid-state lithium batteries[J],2020,13(12).
APA	Kim K.J.,&Rupp J.L.M..(2020).All ceramic cathode composite design and manufacturing towards low interfacial resistance for garnet-based solid-state lithium batteries.Energy & Environmental Science,13(12).
MLA	Kim K.J.,et al."All ceramic cathode composite design and manufacturing towards low interfacial resistance for garnet-based solid-state lithium batteries".Energy & Environmental Science 13.12(2020).